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Date: Wed, 16 Sep 2009 15:10:21 GMT From: tip-bot for Peter Zijlstra <a.p.zijlstra@...llo.nl> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com, a.p.zijlstra@...llo.nl, tglx@...utronix.de, mingo@...e.hu Subject: [tip:sched/core] sched: Disable wakeup balancing Commit-ID: 182a85f8a119c789610a9d464f4129ded9f3c107 Gitweb: http://git.kernel.org/tip/182a85f8a119c789610a9d464f4129ded9f3c107 Author: Peter Zijlstra <a.p.zijlstra@...llo.nl> AuthorDate: Wed, 16 Sep 2009 13:24:49 +0200 Committer: Ingo Molnar <mingo@...e.hu> CommitDate: Wed, 16 Sep 2009 16:44:33 +0200 sched: Disable wakeup balancing Sysbench thinks SD_BALANCE_WAKE is too agressive and kbuild doesn't really mind too much, SD_BALANCE_NEWIDLE picks up most of the slack. On a dual socket, quad core, dual thread nehalem system: sysbench (--num_threads=16): SD_BALANCE_WAKE-: 13982 tx/s SD_BALANCE_WAKE+: 15688 tx/s kbuild (-j16): SD_BALANCE_WAKE-: 47.648295846 seconds time elapsed ( +- 0.312% ) SD_BALANCE_WAKE+: 47.608607360 seconds time elapsed ( +- 0.026% ) (same within noise) Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@...e.hu> --- arch/ia64/include/asm/topology.h | 2 -- arch/mips/include/asm/mach-ip27/topology.h | 1 - arch/powerpc/include/asm/topology.h | 1 - arch/sh/include/asm/topology.h | 1 - arch/sparc/include/asm/topology_64.h | 1 - arch/x86/include/asm/topology.h | 2 +- include/linux/topology.h | 6 +++--- 7 files changed, 4 insertions(+), 10 deletions(-) diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h index 569b9da..d0141fb 100644 --- a/arch/ia64/include/asm/topology.h +++ b/arch/ia64/include/asm/topology.h @@ -68,7 +68,6 @@ void build_cpu_to_node_map(void); | SD_BALANCE_NEWIDLE \ | SD_BALANCE_EXEC \ | SD_BALANCE_FORK \ - | SD_BALANCE_WAKE \ | SD_WAKE_AFFINE, \ .last_balance = jiffies, \ .balance_interval = 1, \ @@ -94,7 +93,6 @@ void build_cpu_to_node_map(void); | SD_BALANCE_NEWIDLE \ | SD_BALANCE_EXEC \ | SD_BALANCE_FORK \ - | SD_BALANCE_WAKE \ | SD_SERIALIZE, \ .last_balance = jiffies, \ .balance_interval = 64, \ diff --git a/arch/mips/include/asm/mach-ip27/topology.h b/arch/mips/include/asm/mach-ip27/topology.h index d833239..2305917 100644 --- a/arch/mips/include/asm/mach-ip27/topology.h +++ b/arch/mips/include/asm/mach-ip27/topology.h @@ -48,7 +48,6 @@ extern unsigned char __node_distances[MAX_COMPACT_NODES][MAX_COMPACT_NODES]; .cache_nice_tries = 1, \ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_EXEC \ - | SD_BALANCE_WAKE, \ .last_balance = jiffies, \ .balance_interval = 1, \ .nr_balance_failed = 0, \ diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h index 1a2c9eb..394edcb 100644 --- a/arch/powerpc/include/asm/topology.h +++ b/arch/powerpc/include/asm/topology.h @@ -63,7 +63,6 @@ static inline int pcibus_to_node(struct pci_bus *bus) | SD_BALANCE_EXEC \ | SD_BALANCE_FORK \ | SD_BALANCE_NEWIDLE \ - | SD_BALANCE_WAKE \ | SD_SERIALIZE, \ .last_balance = jiffies, \ .balance_interval = 1, \ diff --git a/arch/sh/include/asm/topology.h b/arch/sh/include/asm/topology.h index a8cc564..f8c40cc 100644 --- a/arch/sh/include/asm/topology.h +++ b/arch/sh/include/asm/topology.h @@ -21,7 +21,6 @@ .flags = SD_LOAD_BALANCE \ | SD_BALANCE_FORK \ | SD_BALANCE_EXEC \ - | SD_BALANCE_WAKE \ | SD_BALANCE_NEWIDLE \ | SD_SERIALIZE, \ .last_balance = jiffies, \ diff --git a/arch/sparc/include/asm/topology_64.h b/arch/sparc/include/asm/topology_64.h index 10b979d..26cd25c 100644 --- a/arch/sparc/include/asm/topology_64.h +++ b/arch/sparc/include/asm/topology_64.h @@ -57,7 +57,6 @@ static inline int pcibus_to_node(struct pci_bus *pbus) .flags = SD_LOAD_BALANCE \ | SD_BALANCE_FORK \ | SD_BALANCE_EXEC \ - | SD_BALANCE_WAKE \ | SD_SERIALIZE, \ .last_balance = jiffies, \ .balance_interval = 1, \ diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h index 589f123..6f0695d 100644 --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -141,7 +141,7 @@ extern unsigned long node_remap_size[]; | 1*SD_BALANCE_NEWIDLE \ | 1*SD_BALANCE_EXEC \ | 1*SD_BALANCE_FORK \ - | 1*SD_BALANCE_WAKE \ + | 0*SD_BALANCE_WAKE \ | 1*SD_WAKE_AFFINE \ | 0*SD_SHARE_CPUPOWER \ | 0*SD_POWERSAVINGS_BALANCE \ diff --git a/include/linux/topology.h b/include/linux/topology.h index a6614b0..809b26c 100644 --- a/include/linux/topology.h +++ b/include/linux/topology.h @@ -95,7 +95,7 @@ int arch_update_cpu_topology(void); | 1*SD_BALANCE_NEWIDLE \ | 1*SD_BALANCE_EXEC \ | 1*SD_BALANCE_FORK \ - | 1*SD_BALANCE_WAKE \ + | 0*SD_BALANCE_WAKE \ | 1*SD_WAKE_AFFINE \ | 1*SD_SHARE_CPUPOWER \ | 0*SD_POWERSAVINGS_BALANCE \ @@ -127,7 +127,7 @@ int arch_update_cpu_topology(void); | 1*SD_BALANCE_NEWIDLE \ | 1*SD_BALANCE_EXEC \ | 1*SD_BALANCE_FORK \ - | 1*SD_BALANCE_WAKE \ + | 0*SD_BALANCE_WAKE \ | 1*SD_WAKE_AFFINE \ | 1*SD_PREFER_LOCAL \ | 0*SD_SHARE_CPUPOWER \ @@ -160,7 +160,7 @@ int arch_update_cpu_topology(void); | 1*SD_BALANCE_NEWIDLE \ | 1*SD_BALANCE_EXEC \ | 1*SD_BALANCE_FORK \ - | 1*SD_BALANCE_WAKE \ + | 0*SD_BALANCE_WAKE \ | 1*SD_WAKE_AFFINE \ | 1*SD_PREFER_LOCAL \ | 0*SD_SHARE_CPUPOWER \ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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